wellington

i have the little 14 gallon tank,but after checking my milage after an 02 sensor and map sensor and the rest of the tune up work,im getting an average of about 30mpg[estimate].

i can drive a little over 50 miles on $5 of gas at $2.89 a gallon,before it starts acting like it needs gas.i dont know if the empty light works,and the gauge is pretty crappy as everyone knows, but it usually does the same thing at the same time on the gauge so i figure it almost empty.

others are claiming 35 mpg on the hiway with their dukes so thats my goal,im close,and thats with 50/50 city hiway.

but i would like a 30 gallon tank for road trips and stuff,and i dont plan on putting in more then 5 gallons at a time any way,but the option would be nice to go 1000 miles between fillups on road trips.


so can i put a 30 gallon tank in my car,and how much bull**** would it be?

moneyman380

I would have to say no, not unless you made the rest of your trunk into a gas tank.

wellington

where do the other cars with 30 gallon tanks put theirs?

sofakingdom

iTrader: (1)

This is pretty basic stuff.... .

Our cars have a certain place that the fuel tank goes. It's bounded by the floor of the car above, the bumper behind, the rear axle and Panhard bar in front, and the muffler below. The muffler is bounded by the ground; i.e. you can't lower it without risking scraping it.

So, you figure out where you're going to put a gas tank that's twice as big as the one that's already there. Which of those parts do you suppose you could leave off to make room?

Cars with bigger tanks, have a bigger place to put them.

ShiftyCapone

iTrader: (7)

30mpg with 14 gallons of fuel gives you a range of over 400 miles. Eventually you will have to stop to go pee. Why not just fill up after your 8 hours fuel supply runs out at the same time. How far are these trips where you don't want to stop for gas?

dennisbernal91z

iTrader: (2)

You can fit anything you want to fit, but that tank full will make you need stonger springs. Or air bags back there to level you out. I cut my floor and have a moded trunk for my fuel cell. If you like to fab stuff up, you can easily get 2 15's back there or a 20 and a 10. Really depends how much work you don't mind doing. Def not gonna be a walk in the park though.

I was willing to do anything to get this idea to work, so i put tons of time into it. It will be one of the most custom camaros I have ever seen when it is done. Check out my site. later

-Dennis

82knightrider

iTrader: (1)

Yeah man,I dont think a 4 cylinder could carry the weight of a full 30 gallon tank

dennisbernal91z

iTrader: (2)

LOL, true, true.


As the gallons go up the weight u have to pull around does too. Then efficiency goes down. You are better off tossing a 20 gallon cell in there, That is def possible if you cut the floor/trunk like I did, and don't have bars in the way.

dr1

Room for 30, but never buying more then 5

my '71 plymouth fury only has a 22 gallon, and it makes the bird look like a compact

Firebat

iTrader: (7)

If you need a new sender unit then drop the tank and put one in. If you have an in-tank fuel pump, put in a new fuel pump too if the pump has a lot of miles on it. Might as well since you'll have the tank out.

Also, if you have an in-tank fuel pump its better to not let it be so close to empty all the time. Its harder on the pump and less fuel might not cool the pump as well.

FYI: LS1 fuel tanks are made of plastic but i dont know if they weigh less.

DartByU

15 gallons is PLENTY of fuel for your car, I remember going something like 425 miles on a tank a few times on cross country trips and I was more than ready to stop for any reason, it takes a LONG time to drive 425 miles. I couldn't imagin going 1000.

ShiftyCapone

iTrader: (7)

15 extra gallons of fuel weighs a whopping 90lbs. Your car could handle it fine on all of its stock components. This thread is getting out of hand. Why is there a need to go more than 400 miles on a tank before you re-fill.

84z28350

I think i have figured it out!!

Hes going to get a hugeass gas tank and partition off part of the tank to smuggle drugs



Who wants to sit and drive 1000miles without stopping? have to stop to take a leak sometime unless you have some jumbo diapers or something lol

rx7speed

chinese fireman drills, empty mountain dew bottles that get "recyled" just not drank afterwords, long road trips coast to coast

you understand right?


but no in all honesty it takes too much time to empty a tank at 300-400miles already as you said. I don't mind the smaller tank

Angelis83LT

If you need a fuel sender take the one you have in the car now and send it you year one.. they will redo the thing and it will work better than it did from the factory.. else you can try the used ones over and over till you get one that works. Buying a new one is crazy expensive (I needed one before i found out year one would rebuild, so i went to parts houses, and dealers and all of them came to a 400$ plus estimate for that one stupid little part.. Cheaper to buy a fuel cell. cut a hole.. fab some stuff up.. and stick it in...

RocBoy

iTrader: (1)

Where would your put you luggage . Last trip I did over a 1000 I had my snow board blocking the rear window and got a tiket . Damb statey .

Angelis83LT

Put your luggage in the back seat lol.. or where you back seat used to be (depending on if you have taken it out or not) the fuel cell really doe not take up that much more room. and it sits flush with the current floor... I just started my installation with a few pointers from the above gu who did it.. it is workin out pretty well so far

wellington

im not going 1000 miles without stopping,just 1000 without filling up. its nice to have that option. i allways liked dual tanks in trucks .and its keeping with the mad max theme of car.

didnt some of the fbodies have a 30 gallon tank?
may be just an auxillary 15 gallon cell in the back will be fine.


a car is worthless without gas!

Angelis83LT

there was never an f-body that came with a 30 gal tank.. i think the biggest was just over a 20gal.... i believe.. no more than 25 though... but then.. gas is liquid and can become any shape.. with enough time you could made a really funky looking fuel cell that will utilize most of the space you already currently have.. heck. if anything put a fuel cell in the back well area

PonyKiller87

Mad Max had a V8 and a Blower, and what looked like 2 55 gal drums laid down in the back window area.

The motor would be cool, but is that really a look you want to go for? lol

wellington

not completly madmax,but somewhere between KARR and madmax.

i prefer function over looks. and having extra gas capacity is very functional compared to the lame 14 gallon tank these cars came with.

im going to keep looking into it,but a 30 gallon tank would be sweet.

also,in a no gas apocalyse,v8s would be scarce,thats what i allways thought was wierd about madmax,theres no gas so everybody drives the biggest car/motor they can get there hands on?

rx7speed

how is a 30 gallon tank going to functional?

more weight even if it is small. you still have to stop prolly more often then you would have to fill up.

I mean unless your doing endurance racing or get something like 5-10mpg whats the point? convenience to be lazy?

RocBoy

iTrader: (1)

The back seat is for the hitchhiker and thier dog .

JP86SS

iTrader: (1)

And all they did was run around wasting gas looking for more gas!
What a life

82knightrider

iTrader: (1)

wellingtons dream car=

mad max interior,iron duke engine (rear mounted), and a 30 gallon gas tank


lol

Angelis83LT

You noticed that all except for the first movie the rest were mostly centered around gas of some sort.. (either the one with the gas refinery... or methane gas ith tina turner....ect.. all they did was look for gas, and kill each other for it lol.. Probably what would happen if such a thing ever did happen with the way things are now lol

JP86SS

iTrader: (1)

Lots of gas here! (This was the Knight Rider, but it was a 72' )

fitbmxseries1

could add a fuel cell as a secondary.... may have to fab it to make it fit, and your car would sag in the rear with that much liquid in the back,it would be easier to just stop at the gas station more often.

wellington

gas is only 7pounds per gallon,so 30 gallons would weigh 210 pounds,thats not realy a lot of weight.

hell,between the interior and the spare tire i have dropped at least 75 pounds, thats almost the diffrence right there.

im thinking of putting a small 10-15 gallon reserve tank where the rear passenger seat was.then covering it in polycarbonate and painting it to match.

and when i get the engine back to 35mpg on the hiway i should be able to go 1000 miles between fillups.

besides,why stop when i can **** in a bottle and throw it out the window.

82knightrider

iTrader: (1)

You sick basterd lol


Hey ,wouldnt it be cool if knightrider did something like the superman shows on the WB are doing right now.Like show kitt and Mike Knight in there early years.Like Kitt would be 1st gen T/A with the scanner and everything and Michael would be younger but old enough to drive and without all the chest hairs

rx7speed

but think about having extra weight just being able to sit and slosh around it would make for some interesting movements I'm sure. even if the weight isn't much it's still extra weight whats the point of adding that axtra weight unless you are endurance racing? just bieng lazy?

JP86SS

iTrader: (1)

I think the risk of fire after a rearender would be interesting as well.
There could be legal problems with driving around with that much fuel in an "uncertified" application.
John Law could give you troble if it isn't a pro looking job.

rx7speed

out of curiosity didn't the early z06 vettes have something like a 30-35 gallon tank in them?

wellington

my friends tbird came with a 30gallon from the factory.

its not illegal to haul gas in a gas powered car,i think as long as its less then a certain amout its fine,but i think its in the hundreds of gallons,so im not really that concerned with the law.

and what if i wanted to do endurance racing? that would be one hell of an advantage. i could probably get 50 gallons of fuel total,and have something like 1300-1400 miles in one tank. im going to be limited to where i can put that much fuel.

the space left in the back on the passenger side would only hold about 7-10 gallons , but still,this isnt the apocalypse so
25 gallons is fine. i just want more milage per tank then an average car.cars are worthless without gas ,so extra gas is allways better.

also,i was kidding about the pee-bottle,a funnel and hose throu the floor board will work fine.

84z28350

just cut a hole through the seat and the floor and run a chunk of PVC pipe, just whip your pants down when you jump in the car and your ready to go!

wellington

firebird potty,yes the new firebird potty!!! take a crap while your driving,no more useless stopping while driving ,just let your turds fall on the road!!!only $29.95! yes,$29.95,order now!!!

nedry

I've been looking into this myself, and I think the thirdgen tank record is the Fuel Safe Systems SA114 24-gallon fuel cells grafted into some of the few thridgen Firehawks. Check out http://fuelsafe.net/pdf/Road%20Racing.pdf , scroll to what's marked as page 17.

As for the whizz concerns, go easy on the guy. Some of us run slightly dehydrated or have otherwise been blessed with really-long-endurance bladders. I've actually been thinking about pairing an SA114 with a secondary, smaller, fuel cell under the backseat myself (with a custom firewall added).

Wellington, don't let 'em get to ya. Welcome to the "Outer Limits" community on ThirdGen.org.